Also the list of "streams that have good populations of tricos" is a pretty short list.
Disagree. Could name two dozen quickly, and I'm sure there's plenty more. Most seem to have limestone influence, though, and being from Westmoreland/Tioga you're not really in the right area.
I have had many days when the conditions seemed perfect but for what ever reason the Sulphurs or Tricos didn't show at all or didn't show enough to matter.
Pretty rare, IMO, without explanation. There are plenty of times where I'm not sure if they'll show, meaning there's a reason they may not (usually weather related, meaning a storm that may or many not have put things off). Though knowing, for instance, that March Brown spinners come 3+ days after they hatch, but tricos the day after, means a lot. It means for MB spinners, any major storm in the last few days could derail them, and you need a fairly long period of stable weather. For trico's, just so it didn't storm that morning, you're good.
Also many days when the bugs were on the water and the fish didn't seem to care.
Agreed, and I acknowledged that the fish's response to the bugs is much harder to predict. I still try, but my accuracy rate is MUCH lower.
Most of the other hatches last about a week max, living two hours away from a stream with good hatches and having to work for a living means I have to be very lucky to be on the stream when the bugs are anywhere near their peak and the fish are actually on them
Most last well over a week. But yeah, as I said what is difficult is having the time to research it, peruse reports, call fly shops, and be able to pick up and go wherever you need to go whenever you need to be there. Given time and total freedom, a little knowledge can put you on hatches anytime you wish. Time isn't an easy thing to get.
In your situation, you have to be able to plan days if not weeks ahead, go, and hit it perfect on your first shot. That isn't so easy.
But even if you get a multi-day trip, I usually find I'm onto things by about day 3. From there I could probably hold myself on a hatch every day until a weather system comes through that's massive enough to shake things up everywhere. Then it's a couple more days of figuring things out.
Bug X starts on stream A, then starts on stream B, then starts on stream C.
By the time bug X is starting on stream C, bug Y is about to start on stream D.
All you need is a few days to figure out exactly where you are in this whole cycle and the rest falls into place.